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  • Title: Dissipation of Emamectin Benzoate Residues in Rice and Rice-Growing Environments.
    Author: Deng L, Chen L, Guan S, Liu J, Liang J, Li X, Li Z.
    Journal: Molecules; 2020 Jan 23; 25(3):. PubMed ID: 31979297.
    Abstract:
    The experiment developed the ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC/MS/MS) method for testing emamectin benzoate, and studied the metabolism of emamectin benzoate in rice plants and rice-growing environments via application of this testing method. The dissipation curve of emamectin benzoate standard substance was good at 0.5-200 μg L-1, and its correlation coefficient was greater than 0.99. In the concentration range of 0.1-50 μg kg-1, the average recovery rate of plants, soil, and field water was 82 %-102 %, and relative standard deviation (RSD) was between 0.3 % and 15.9 %. Half-lives in rice plants and soil were 0.8-2.8 days and 1.9-3.8 days, respectively, and emamectin benzoate was not detected in rice or rice hull. The experiment showed that emamectin benzoate is harmless to human health at the concentration recommended by the manufacturer.
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